Weather History for Gaithersburg, MD

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Monday, January 21, 2013

  Actual Average (KCGS) Record (KCGS)
Temperature  
Mean Temperature 34 °F -  
Max Temperature 42 °F 41 °F 65 °F (1959)
Min Temperature 26 °F 24 °F -5 °F (1985)
Degree Days  
Heating Degree Days 31    
Moisture  
Dew Point 16 °F    
Average Humidity 52    
Maximum Humidity 64    
Minimum Humidity 38    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 4 mph (East)    
Max Wind Speed 16 mph    
Max Gust Speed 39 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 21, 2013 Rise Set
Actual Time 7:23 AM EST 5:17 PM EST
Civil Twilight 6:54 AM EST 5:46 PM EST
Nautical Twilight 6:21 AM EST 6:18 PM EST
Astronomical Twilight 5:50 AM EST 6:50 PM EST
Moon 12:55 PM EST 2:49 AM EST
Length of Visible Light 10h 51m
Length of Day
9h 53m
Waxing Gibbous, 75% of the Moon is Illuminated
Jan 21
Waxing Gibbous
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New
Feb 17
First Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 28.4 °F 24.6 °F 12.2 °F 51% 30.11 in 10.0 mi NNW 3.5 mph - N/A   Clear
12:35 AM 28.4 °F 23.3 °F 14.0 °F 55% 30.10 in 10.0 mi NNW 4.6 mph - N/A   Clear
12:55 AM 28.4 °F - 15.8 °F 59% 30.10 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 30.2 °F - 12.2 °F 47% 30.10 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 30.2 °F - 12.2 °F 47% 30.10 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 28.4 °F - 14.0 °F 55% 30.11 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 28.4 °F - 17.6 °F 64% 30.11 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 28.4 °F - 12.2 °F 51% 30.11 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 28.4 °F 24.6 °F 12.2 °F 51% 30.11 in 10.0 mi NNE 3.5 mph - N/A   Clear
3:15 AM 28.4 °F - 14.0 °F 55% 30.11 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 28.4 °F 23.3 °F 14.0 °F 55% 30.10 in 10.0 mi NNE 4.6 mph - N/A   Clear
3:55 AM 28.4 °F 24.6 °F 15.8 °F 59% 30.10 in 10.0 mi ENE 3.5 mph - N/A   Clear
4:15 AM 28.4 °F - 14.0 °F 55% 30.10 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 28.4 °F - 12.2 °F 51% 30.09 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 28.4 °F - 14.0 °F 55% 30.09 in 10.0 mi Calm Calm - N/A   Clear
5:15 AM 28.4 °F 24.6 °F 14.0 °F 55% 30.10 in 10.0 mi ESE 3.5 mph - N/A   Clear
5:55 AM 26.6 °F - 12.2 °F 55% 30.11 in 10.0 mi Calm Calm - N/A   Clear
6:15 AM 26.6 °F - 15.8 °F 64% 30.11 in 10.0 mi Calm Calm - N/A   Clear
6:35 AM 26.6 °F - 12.2 °F 55% 30.11 in 10.0 mi Calm Calm - N/A   Clear
6:55 AM 26.6 °F 22.6 °F 12.2 °F 55% 30.11 in 10.0 mi ESE 3.5 mph - N/A   Clear
7:15 AM 26.6 °F - 12.2 °F 55% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:35 AM 26.6 °F 22.6 °F 12.2 °F 55% 30.10 in 10.0 mi ESE 3.5 mph - N/A   Mostly Cloudy
7:55 AM 26.6 °F 22.6 °F 14.0 °F 59% 30.10 in 10.0 mi ESE 3.5 mph - N/A   Overcast
8:15 AM 28.4 °F 24.6 °F 15.8 °F 59% 30.11 in 10.0 mi SE 3.5 mph - N/A   Overcast
8:35 AM 28.4 °F 22.2 °F 14.0 °F 55% 30.10 in 10.0 mi SE 5.8 mph - N/A   Overcast
8:55 AM 28.4 °F 22.2 °F 15.8 °F 59% 30.11 in 10.0 mi SE 5.8 mph - N/A   Overcast
9:15 AM 28.4 °F 23.3 °F 15.8 °F 59% 30.10 in 10.0 mi SE 4.6 mph - N/A   Overcast
9:35 AM 28.4 °F 21.2 °F 15.8 °F 59% 30.10 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
9:55 AM 30.2 °F 23.4 °F 15.8 °F 55% 30.09 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
10:15 AM 30.2 °F 23.4 °F 15.8 °F 55% 30.09 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
10:35 AM 30.2 °F 22.6 °F 15.8 °F 55% 30.08 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
10:55 AM 30.2 °F 24.3 °F 17.6 °F 60% 30.07 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
11:15 AM 30.2 °F 25.4 °F 17.6 °F 60% 30.05 in 10.0 mi SSE 4.6 mph - N/A   Partly Cloudy
11:35 AM 30.2 °F 25.4 °F 17.6 °F 60% 30.03 in 10.0 mi SE 4.6 mph - N/A   Clear
11:55 AM 32.0 °F 27.5 °F 17.6 °F 55% 30.02 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
12:15 PM 33.8 °F 29.6 °F 17.6 °F 52% 30.00 in 10.0 mi ESE 4.6 mph - N/A   Scattered Clouds
12:35 PM 33.8 °F 30.8 °F 17.6 °F 52% 29.98 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds
12:55 PM 33.8 °F 29.6 °F 19.4 °F 56% 29.96 in 10.0 mi South 4.6 mph - N/A   Overcast
1:15 PM 35.6 °F 30.7 °F 19.4 °F 52% 29.95 in 10.0 mi SE 5.8 mph - N/A   Mostly Cloudy
1:35 PM 37.4 °F 30.8 °F 21.2 °F 52% 29.93 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
1:55 PM 39.2 °F 32.5 °F 21.2 °F 49% 29.91 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
2:15 PM 39.2 °F 33.6 °F 19.4 °F 45% 29.89 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
2:35 PM 41.0 °F 34.7 °F 21.2 °F 45% 29.87 in 10.0 mi SSW 10.4 mph 16.1 mph N/A   Overcast
2:55 PM 41.0 °F 35.2 °F 21.2 °F 45% 29.86 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
3:15 PM 42.8 °F 37.5 °F 21.2 °F 42% 29.84 in 10.0 mi South 9.2 mph - N/A   Partly Cloudy
3:35 PM 42.8 °F 38.6 °F 21.2 °F 42% 29.84 in 10.0 mi SSW 6.9 mph - N/A   Clear
3:55 PM 42.8 °F 38.0 °F 21.2 °F 42% 29.83 in 10.0 mi South 8.1 mph - N/A   Clear
4:15 PM 42.8 °F 39.3 °F 21.2 °F 42% 29.82 in 10.0 mi South 5.8 mph - N/A   Clear
4:35 PM 39.2 °F 35.9 °F 19.4 °F 45% 29.82 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
4:55 PM 39.2 °F - 21.2 °F 49% 29.83 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:15 PM 37.4 °F 33.8 °F 21.2 °F 52% 29.84 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
5:35 PM 37.4 °F 31.4 °F 21.2 °F 52% 29.86 in 10.0 mi NNE 8.1 mph - N/A   Overcast
5:55 PM 37.4 °F 33.8 °F 19.4 °F 48% 29.87 in 10.0 mi NE 4.6 mph - N/A   Overcast
6:15 PM 37.4 °F 34.9 °F 21.2 °F 52% 29.89 in 10.0 mi NE 3.5 mph - N/A   Overcast
6:35 PM 35.6 °F 31.7 °F 21.2 °F 56% 29.89 in 10.0 mi NNE 4.6 mph - N/A   Scattered Clouds
6:55 PM 37.4 °F 32.8 °F 15.8 °F 41% 29.90 in 10.0 mi North 5.8 mph 17.3 mph N/A   Mostly Cloudy
7:15 PM 35.6 °F 25.9 °F 12.2 °F 38% 29.91 in 10.0 mi NNW 16.1 mph 25.3 mph N/A   Mostly Cloudy
7:35 PM 33.8 °F 25.3 °F 14.0 °F 44% 29.92 in 10.0 mi NNW 11.5 mph 20.7 mph N/A   Scattered Clouds
7:55 PM 32.0 °F 24.2 °F 14.0 °F 48% 29.91 in 10.0 mi North 9.2 mph 21.9 mph N/A   Clear
8:15 PM 30.2 °F 20.8 °F 14.0 °F 51% 29.91 in 10.0 mi NNW 11.5 mph 21.9 mph N/A   Clear
8:35 PM 30.2 °F 21.3 °F 14.0 °F 51% 29.91 in 10.0 mi NNW 10.4 mph 17.3 mph N/A   Clear
8:55 PM 30.2 °F 19.8 °F 12.2 °F 47% 29.91 in 10.0 mi NNW 13.8 mph 20.7 mph N/A   Clear
9:15 PM 28.4 °F 16.6 °F 14.0 °F 55% 29.91 in 10.0 mi NNW 16.1 mph 23.0 mph N/A   Clear
9:35 PM 28.4 °F 18.0 °F 12.2 °F 51% 29.91 in 10.0 mi NNW 12.7 mph 21.9 mph N/A   Clear
9:55 PM 28.4 °F 17.0 °F 12.2 °F 51% 29.92 in 10.0 mi NNW 15.0 mph 28.8 mph N/A   Clear
10:15 PM 28.4 °F 18.5 °F 10.4 °F 47% 29.93 in 10.0 mi NW 11.5 mph 39.1 mph N/A   Clear
10:35 PM 28.4 °F 20.4 °F 8.6 °F 43% 29.94 in 10.0 mi NNW 8.1 mph 23.0 mph N/A   Clear
10:55 PM 28.4 °F 19.7 °F 8.6 °F 43% 29.95 in 10.0 mi NNW 9.2 mph - N/A   Clear
11:15 PM 26.6 °F 16.2 °F 10.4 °F 51% 29.95 in 10.0 mi NW 11.5 mph 17.3 mph N/A   Clear
11:35 PM 26.6 °F 15.2 °F 10.4 °F 51% 29.95 in 10.0 mi NNW 13.8 mph 24.2 mph N/A   Clear
11:55 PM 26.6 °F 14.3 °F 10.4 °F 51% 29.95 in 10.0 mi NNW 16.1 mph 23.0 mph N/A   Clear